System requirements
SigningHub enterprise requirements
The following table defines the system requirements for SigningHub Enterprise:
SigningHub Enterprise Requirements
Component
Description
Server System
SigningHub Enterprise is a Microsoft .NET Framework application and is supported on these operating systems:
Windows Server 2025
Windows Server 2022
Windows Server 2019
Windows Server 2016
Installation of SigningHub Enterprise requires Microsoft DotNet SDK 8.0.3 or above, and Microsoft Windows Hosting Server 8.0.8 or above to run the application.
(https://dotnet.microsoft.com/en-us/download/dotnet/8.0)
IIS is a mandatory component. The versions stated below are supported. For more information, refer to Prerequisites:
IIS 10
Microsoft .NET Framework v4.8 or above
(https://dotnet.microsoft.com/download/dotnet-framework/net48)
Hardware: A modern multi-core CPU such as the Xeon E56xx or the E3 or E5 range is recommended, with a minimum of 16GB RAM and 200 GB disk space required for the application and its logs. 32GB RAM or higher is needed to support a larger population of concurrent users.
Microsoft Windows Hosting Bundle
Installation of SigningHub Enterprise requires Microsoft Windows Hosting Bundle v8.0.8 or above to run the application. Download Hosting Bundle.
Database Server
SigningHub Enterprise supports these databases to store the configuration data:
Microsoft SQL Server 2022, 2019, 2017 (Express, Web Edition, Standard or Enterprise)
Microsoft Azure SQL Server
Oracle 19c
SigningHub Enterprise uses the Dapper framework, so support for other databases can be considered for specific projects – ask for further information.
SigningHub Enterprise database can be installed on the same machine as the SigningHub Enterprise application. However, for optimal performance, it is recommended to use a dedicated host, either virtual or physical.
Hardware: A modern multi-core CPU such as Xeon E3-xxxx or E5-xxxx series is recommended, with a minimum 16GB RAM (24GB RAM recommended). In addition, 30GB of disk space as a minimum for document storage of File System, and 50GB for Database Storage, with the upper level determined by the online storage requirement.
Client Machines (Systems using the service)
The following client machines/devices are supported:
Windows 10, 8, 7 Browser support for central and local signing
Linux (any) Browser support for central and local signing
Mac OS X 10+ Browser support for central and local signing
iPad (iOS 9+) SigningHub App supports central signing only
iPhone (iOS 9+) SigningHub App supports central signing only
Android 5+ SigningHub App supports central signing only
Web Browsers (For end-users and administrators)
The following browsers are supported:
Edge 130+
Firefox 130+
Chrome 130+
Safari 16+ (Local signing is not available for Safari installed on the Windows platform.)
Opera 114+
ADSS signing server requirements
The following table defines the system requirements for the ADSS Signing Server:
ADSS Signing Server Requirements
Component
Description
ADSS Signing Server
ADSS Signing Server 6.0.x or above is a mandatory component of the solution. It provides the underlying security services required by SigningHub Enterprise.
Note that the ADSS Signing Server may be installed on the same server platform as SigningHub Enterprise and is silently installed as part of the installation process. However, a dedicated, separate installation of ADSS Signing Server can also be used. Database requirements for the ADSS Signing Server differ from those of SigningHub Enterprise. Please refer to the ADSS Signing Server documentation suite for more information. (https://manuals.ascertia.com/ADSS-Server/v8.3/Admin-Guide/welcome.html)
Regardless of the deployment model chosen, SigningHub Enterprise and ADSS Signing Server must have their respective databases.
Compatibility with Versions of ADSS Server: SigningHub is compatible with ADSS Server versions:
8.3.13
8.3.12
8.3.11
Admin/Operator Web Browsers
For the ADSS Signing Server Admin interface, these browsers are supported:
Edge 130+
Chrome 130+
Firefox 130+
Optional HSMs
The following Hardware Security Modules (HSMs) are supported:
Thales SafeNet Luna SA, Luna PCI, Luna G5
Thales SafeNet Protect Server (PCI or External)
nCipher nShield Solo or Connect HSMs
Utimaco HSMs
Azure Key Vault
Amazon AWS Cloud HSM
DMZ Proxy Systems
A DMZ proxy server is recommended to provide enhanced security for SigningHub Enterprise. Supported web servers are:
Windows Server + IIS or Apache or IBM HTTP Server
Linux + Apache or IBM HTTP Server
Ascertia recommends a reasonable CPU, 4GB RAM, and 1 GB disk space for the web server host.
SigningHub Enterprise and ADSS Signing Server support network proxies to allow authenticated access to external services.
Signing with local smartcards or USB Tokens requires ADSS Signing Server Go>Sign Service, which requires the IIS Application Request Routing (ARR) module as a proxy server (if used). See Configuring Application Request Routing for Local Signing for details.
SigningHub Enterprise, ADSS Signing Server, and the database can all be installed on the same system for testing purposes. However, for optimal performance and production systems, Ascertia recommends that the database be installed on a dedicated host. If required ADSS Signing Server can also be installed on a separate server.
The details given above are the minimum system requirements; these may need to be revised to meet specific performance requirements. SigningHub Enterprise and ADSS Signing Server can also be configured in a load-balanced mode to provide higher resilience and throughput.
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